Malegra 100 is a popular medication used to treat erectile dysfunction (ED) in men. It contains Sildenafil Citrate, the same active ingredient found in other ED medications like Viagra, and works by enhancing blood flow to the penis, allowing men to achieve and maintain an erection during sexual activity. Malegra 100 belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors, which help relax the muscles and blood vessels in the penile area.